Linter gin



. Sept. 7 1926.

R. W. MCLEAN LINTER GIN Filed August 2, 1924 1'7 SheetslSheet l .4 2 www m ne l .m U- i., N W e. z N E12. G

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Sept 7 1926.

R' .W- MCLEAN 1,599,024

LINTER GIN Filed August 2, 1924 17 SheetS-Shet 4 lsept. 7, 1926.

1,599,024 R. w. MCLEAN LINTER GIN Filed August a 1924 17 Sheets-Sheet 6 zy @v @lh l Sept. 7 1926.

' 1,599,024 R. W. MCLEAN LINTER GIN Filed August 2, 1924 1'7 sheets-Sheet '2 /6 Sept. 7 1926.

R. W. MCLEAN LINTER GIN 17 Sheet's-She'et 8 Filed August 2l 1934 @Afem @si Sept. 7 1926.

R. W. MGLEAN LINTER YGIN `24 17 Sheets-Sheet 9 Filed kAugust 2 Sept. 7 1926.

R. w. MCLEAN LINTER GIN 17 Sheets-Sh'et 10 Sept. 7 1926.

R. W. MCLEAN LINTER GIN Filed Augus 2 1'/ sheets-Sheet- 11 figg. /J

sept. 7,1926. 1,599,024

l R. W. MCLEAN LINTER GI N Filed August 2, 1924 1'7 Sheets-Sheet l2 Sept. 7 1926.

- R. w. MCLEAN LINTER GIN Filed August 2, 1924 17 Sheets-Sheet -15 ,fbg/

ZZ fr ai a6 jue? i4( Sept. 7 1926.

R. W. MCLEAN LINTER GIN Filed August 2 A 1924 1'7 Sheets-5heet 14 zvefaow Sept 7 ,1926.

R- W. A M cLEAN LINTER GIN 17 Sheets-Sheet 15 Sept.` 7 1926.

R. W. MCLEAN LINTER GIN Filed August 2, 1924 17 Sheets-Sheet 1'7 Patented Sept. 7, 19h26.

UNITED STATES PATENT OFFICE.v

, MASSACHUSETTS, A CORPORATION LINTER GIN.

Application led August 2,

This Ainvention pertains to that general class of machines adapted to remove useful fibres from their attachments, such for example, as gins, cotton seed linters or linter 6 gins, wool burring machines, and the like, and has particular reference to saw gins for de-linting cotton seed, although unrestricted except in minor details to this specific type of machine.

Objects of the invention are to provide an individual condenser gin of the above type so designed as substantially to avoid the delivegy of dust or lint laden air to the workroom; vto provide a gin which will be comparatively quietin operation; to provide a closed circuit` y gin having air passages of such form as to avoid the production of eddy currents at undesiredpoints; and to provide a gin which requires less power for opera-tionfthan gins :of usual character.

`Further objects are to provide for the tterf'separation of the various products of `the gin', includin the seeds, cleanr fibre, metes, and short irty fibre;v yto provide a gin of compact design which 'occupies aminimum floor space and which may be closely associated withk like gins or other machines; and to provide a drive unit for such a machine capable of driving the operative parts of av single gin or two adjacent gins, as maybe desired, and permitting the gin or gins to be stopped and started without diculty. v

Further objects are to provide for ready adjustment of the various operative elements of the gin to suit varying conditions and to secure maximum efficiency, as well as for accessibility of parts to permit their adjustment, removal, or repair; to permit observation of the enclosed working parts during operation; and in general to improve vand simplify the usual structural and operative elements of such a machine.

In the accompanying drawings, a preferred embodiment of the invention-isillustrated, and in such drawings Fig.' 1 is a front elevation of a linter gin embodying the present invention, including the driving unit;

Fig. 2 is a rear elevation of the'machine;

Fig. '3*-is an elevation from the left hand side of 'the machine; l Fig. 4 is an elevation from the righthand 1924. Seril'li'o. 729,725.

side of the machine unlt; Il

Fig. 5 is an elevation from the left-hand sid? showing the driving unit to larger sca e;

Fig. 6 is a corresponding front elevation of the drive unit.; Fig. 7 is a fragmentary vertical section, .substantially on the line 7-7 of Fig. 1` showmg the front portion of the machine to large sca e;

Fig. Sis a fragmentary the same plane as Fig. 7 portion of the machine; y F1g.v9 is a fragmentary elevation, partly in section, of the left-.hand .end of the machine showing the front portion thereof 7 with the breast and associated parts raised, and the saw swung forwardly to inoperative posltion;

Fig. 10 is a fragmentary elevation from the right-hand end of the machine showing details of a train of gears for actuating the` float roll;

Fig. 11 is a fragmentary diagrammatic section substantiall on the same vertical plane as Fig. 7 n in icating the path of the 80 moving air current;

Fig. 12 is a fragmentary diagrammatic section on the same plane as Fig. 1l showing the feed box of the machine;

Fig. 13 is a vertical section to large scale 8,5 through the condenser drum and that portion of the casing in which the drum is housed.;

Fig. 14 is a. vertical section to large scale substantially on the line let-14 of Fig. 2;

Fig. 15is a fragmentary detail front eleva- 90 tion of thefloat roll and its shaft;

Fig. 16 is a section to larger scale substantiall on the line 16-16 of Fig. 15;

Fig. l; is a fragmentary perspective view of one end of the oat `roll with its shaft removed; v

Fig. 18 is a fragmentary section substantially on the'line 18-18 of Fig. 3 showing' the vmeans of adjustably connecting theT Tleiigthted controlling lever togthe float roll ,.-f s a Fig. 19 is a section on the line 19 19 of showing the driving vertical section on 05 showing the rear Fig. 18; y

Fig.- 20 is a fragmentary diagrammatic 105 vertical `section showing the means for swinging the movable breast and associated being also shown parts to inoperative position to expose the saw cylinder;

Fig. 21 is a diagrammatic vertical sectional view to large scale showing means for adjusting the rake head, together with the lower portion of the grate-fall;

Fig. 22 is a fragmentary section on the same plane as Fi 21 showing the upper part of the grateall;

Fig. 23 is a perspective view of one of the removable bars of the grate-fall;

Fig. 24 is a section substantially on the line 24-24 of Fig. 21;

Fig. 25 is a fragmentary transverse section to large scale through the doffer brush cylinder;

Fig. 26 is a fragmentary section substantially on the line 26-26 of Fig. 25;

Fig. 27 is a vertical vtransverse section through the saw cylinder shaft showing its drive clutch in end elevation, fragmentary portions of certain elements of the clutch detached and turned at right angles to the plane of the main part of the figure:

Fig. 28 is a vertical section on the line i 2te-2e of Fig. 27;

transverse sec- Fi 29 is a fragmentary g details -of the tion to large scale showing condenser cylinder;

Fig. 30 is' a section to larger scale on the line 30--30 of Fig. 29 also showing adjacent parts of the casing;

Fig. 31 is a fragmentary horizontal section through the upper part of the division board showing a portion lof the casing an means for guiding and adjusting the division board;

Fig. 32 is a fragmentary vertical section on the line 32-32 of Fig. 31;

Fig. 33 is a fragmentary section substantially on the line 33-33 of Fig. 2;

Fig. 34C is a fragmentary section on the line B1-34 of Fig. 33;

Fig. 35 is a fragmentary horizontal section through the saw shaft cradle adjusting shaft showing the means for retaining the cradle in operative position;

Fig. 36 is a fragmentary side elevation showing the devices for supporting and adjusting the draft shield;

Fig. 37 is a fragmentary section on the line 37--37 of Fig. 36;

Fig. 38 is a fragmentary elevation of the dust screen brush;

Fig. 39 is a fragmentary elevation of the interior of the right-hand side wall of the casing, showing the 'relative positions of the drive shafts for the doffer brush and saw cylinder;

Fig. 40 is a fragmentary to large scale substantially on of Fig. 3;

Fig. 41 is a horizontal section on line 4:1-41 of Fig. 40; and

vertical section the line L10--40 and Fig. 42 is a fragmentary vertical section illustrating a modified and preferred form of back for the breast structure.

In that embodiment of the invention herein selected for illustration the novel mechanical features are shown as applied to a saw gin of the type employed for de-linting cotton seed and hereinafter referred to claimed as a linter gin, although many of such novel features are of broad utility and capable of embodiment in gins or other fibre treating machines of different types, and it is to be understood that las herein employed the term linter gin is used merely for convenience in description and not in a limiting sense.

General construction.

In the preferred arrangement herein illustrated the gin structure comprises a main or front unit. having spaced end frames 1 and 2 preferably in the form of castings providing solid end walls. These end frames support a substantially horizontal floor 3; (Fig. 7) a top or cover 4 which is preferably of sheet metal, and a front wall 5 which inclines upwardly from the floor 3 and is then continued vertically for a short distance terminating at the point 6.

This front unit preferably contains the usual feed box or hopper with its feed roll for advancing the material, for example cotton seed, to be treated, and the feed regulating means, for example a feeler or detector which controls the rate of feed, and which in turn is controlled by the amount of material delivered by the feeding means.

The front unit also comprises a breast structure embodying a roll box having a float roll therein; a grate-fall and rake head; the instrumentality employed for removing the fibre from its attachments, for example a saw cylinder; the means for doffing the fibre from such detaching means, for example a rotary brush which may also constitute means for setting up a fibre conveying air current within the casing of the machine; and means for separating the motes and trash from the fibre suspended in the air current.

The rear unit of the 'structure comprises end frame members 9 and 10 (Fig. 2) which are bolted to flanges 7 and 8 respectively (Figs. 3 and 4) of the main frame members 1 and 2. This rear unit is furnished with a ioor 11 (Fig. 8), a cover 12, the latter preferably being of sheet material, for example sheet metal, and a rear wall 13. The Hoor 11 is spaced vertically from the iioor 3 of the main or front casing, being supported at its forward edge by means of a 'bar 1l secured at its ends to the main frame members 1 and 2. The space below the bar 14 is normally closed by means of a hinged door 15 which may be raised to permit inspection llO and cleaning of the bottom of the main casing. he lower part 13 of the rear wall 13 of the rear unit is likewise hinged to provide access to the lower part of the rear unit.

l This rear unit preferably comprises means for separating dust from the air currents, the term dust being lhere employed as comprising small particles of sand, grit and other materials such as are not commonly removed by the usual motn as extremely short ieces of gbre which ordinaril a pear as y in the work room and whiclly w ile having some commercial value is not readily removed from the air current by the usual condensing means.

hefrear unit also preferably comprises a settlin chamber cooperating with a condenser, gor example a rotary cylindrical screen upon whose outer surface the clean long libres are deposited; a doffer roll for removing the fibres from the 'surface of the condenser in the form of a continuous bat; a presser roll for compacting the, bat as it passes over the dofl'er roll; a lap roll for receiving and guidin the bat as the latter is delivered by the offer roll; and a bat roll upon which the bat is wound.

' The front and rear units also contain suitable partitions, deflectors', and regulating means for determining the flow of the air current in passing from one of the operative instrum'entalities to another.

-While the above arrangement of the operative instrumentalities in certain groups -within the front and rear units of the machine is desirable it is to be understood that the invention is not in any manner restricted-to such a groupinor of the operative instrumentalities but t at they may be vrou edl in a different manner if desirew ile the distinction herein made between the front and rear unit is merel for convenience both in construction an description Vand is not in any manner necessary to the proper functioning of the machine as a who e.

Feeding lmeans.

The selected embodiment of means herein illustrated for feeding the material, for example y cotton seed, to the operative instrumentalities comprises a feed box or hopper 21 (Fig. 7) having end frame members 16 and 17 (Fig. 2) whlch are mounted upon the upper edges of the frame members 1 and 2 respectively. These end members 16 and 17 support a vertical rear wall 18 (Fig. 7) and a front wall preferably comprising a vrearwardly and downwardly inclined u perpart 19 and a vertical portion 20'.

A shaft 22 is journalled in the end members 16 and 17 res ectively and carries a feed roll 23 of any esired construction. A sliding gate 24 'of usual type may be rovided for cooperation with the feed rol 23 means, as well sired position. The sector 37 in regulating the` amountof downwardly by the latter. rI,his gate 24 is provided with toothed racks 25 on its rear ace engaging inions 26 mounted upon a shaft 27 journa led in suitable brackets carried by the end members 16 and 17. This shaft may be turned by means for example of fa lever 27 provided with a' locking segment 27? (Fig. 10), having openings for the reception of a locking pin 27 A drive shaft 28 is mounted in brackets upon the rear wall 18 of the feed box and is provided at one end, preferabl the right-hand end of the machine as erein illustrated. with a pulley 29 (Fig. 4) which is rotated by means of a driving belt 30.

The opposite end of the. shaft 28 is furnished with a crank disc 31 (Fig. 3) provided with a crank pin 32 connected to one end of a link 33 Whose opposite end is pivotally secured to a rocking segment 34 turning freely upon the end of the feed roll shaft 22.

turned.

The engagement of the pawl 35 with the teeth of the ratchet 36 is determined by means of a movable guard sector 37 turning freely upon the shaft 22 and having an arcuate shield 38 which overlies the edge of the wheel 36. Preferably the sector 37 is furnished with a counterweight 39 so that it may readily be moved to any deis furnished with 'a pin 40 (Fig. 9) engaging a slot 41 in one end of a connecting rod 42 of adjustable length whose other end is pivotally secured to a regulating lever 43 hereinafter more fully described.

From the lower part of the rear wall 18 of the feed box a partition 44 slopes downwardly and forwardly. A support 45, normally forming a continuation of the upper surface of the partition 44 is hinged to. the lower edge of the latter. The support 45 is furnished with a longitudinal slot for the reception of one or more steel bars 46 which are suitably magnetized during the operation of the machine and which act to separate particles of iron or steel accidentally included with the material being treated.

A plate 47, preferably of sheet metal, extends downwardly and forwardly from the lower edge of the su port 45. This plate is furnished with end) flanges 48 for attachment to the end members 16 and 17 of the feed frame.

A transverse bar 49 projects downwardly and forwardly from the lower edge of the front member 20 of the hopper and a cover material fed 

